| 摘要: |
| 在0.1mol/L Na2CO3溶液中用失重法研究K2CrO4、Na2SiO3溶液及两者混合液对铝的缓蚀作用。在0.1mol/L Na2CO3溶液中分别添加浓度为0.01~0.05mol/L的K2CrO4和0.01~0.10mol/L的Na2SiO3,铝的缓蚀率分别为91.4%~95.0%和91.4%~97.1%。K2CrO4的适宜浓度是0.03mol/L,Na2SiO3的适宜浓度是0.08mol/L。在添加0.01mol/L的K2CrO4与0~0.04mol/L的Na2SiO3混合液条件下,铝的缓蚀率为91.4%~99.5%,其中0.01mol/L K2CrO4与0.02~0.03mol/L Na2SiO3的两种混合液均使缓蚀率达到98%以上,比单一缓蚀剂的效果好。 |
| 关键词: 铝 缓蚀 碳酸盐 |
| DOI： |
| 投稿时间：2002-01-04修订日期：2002-03-19 |
| 基金项目: |
|
| Corrosion Inhibition of Aluminium in Sodium Carbonate Solution |
|
Peng Tiehui
|
| (Department of Material and Chemical Engineering, Guilin Institute of Technology, 12 Jianganlu, Guilin, Guangxi, 541004, China) |
| Abstract: |
| The corrosion inhibition of aluminium is studied by the method of loss of weight in the solution of 0.1 mol/L Na2CO3.The K2CrO4(0.01 to 0.05 mol/L),Na2SiO3(0.01 to 0.10 mol/L) and the mixed solution of K2CrO4(0.01 mol/L) and Na2SiO3(0 to 0.04 mol/L) are used as inhibitor. The inhibition rates of 91.4% to 95.0% and 91.4% to 97.1% against corrosion of aluminium are obtained respectively for K2CrO4 and Na2SiO3 in the tested concentrations.The favor concentrations of K2CrO4 and Na2SiO3 are 0.03 mol/L and 0.08 mol/L respectively.The inhibition rates of 91.4% to 99.5% are obtained in the addition of the mixed solution of 0.01 mo/L K2CrO4 and 0 to 0.04 mol/L Na2SiO3,in which over 98% is obtained for the mixed solutions of 01 mol/L K2CrO4 and 0.02 to 0.03 mol/L Na2SiO3,suggesting that the mixed inhibitors are better than the single inhibitor in corrosion inhibition. |
| Key words: aluminium corrosion inhibition carbonate |
